If you need portability, don't have a lot of room, and / or don't have a lot to spend, here is a simple, low cost, and highly effective solution to enhancing signal reception on the ATS 20 & 25. BNC plug (plugs antenna into your BNC EXT ANT jack on the back of the radio).
eBay
If you nee d portability, don't have a lot of room, and / or don't have a lot to spend, here is a simple, low cost, and highly effective solution to enhancing signal reception on the Realistic DX440.
eBay
Hallicrafters S-120 shortwave receiver. Tested and turns on, lights work. It makes a loud hum only. Tubes are all original hallicrafters. The other 4 tubes all tested good. Sold as is for repair or parts.
eBay
This is the top performing Tecsun LW/MW/FM/SW/SSB Triple Conversion PLL (Phase Locked Loop) Radio. It has well performing SSB search function to pickup HAM operators. To prevent signal overload, the receiver has “DX/Local” switch.
eBay
One of Drake's better radios was the SW 8 manufactured in the 1990's for about 5 years. With the radios strength in reception, you will be able to receive communications for hundreds, if not thousands of miles.
eBay
The initial introduction, the NRD 505, reportedly made less than 1,000 units and this receiver broke new ground for enthusiasts with it's high construction standards and precise digital readout. Here is a list of the DSP features on the 545.
eBay
Included: Earphones and dedicated carrying case. Condition: Powers on; radio reception sensitivity is weak. Surface dirt on the front. Otherwise clean overall. Sold as-is based on the above notes.
eBay
FM:64-108 MHz,AM 520-1710kHz, SW 1711-27000 kHz,LW 144-519kHz. 4、【Qualità del suono】 Materiali e componenti di alta qualità rendono che l'uscita radiofonica si esegua bene su tutte le trasmissioni (incluse voci e musica).
eBay